Why rats enter homes more in January and the entry points most people miss

January 20, 2026

As January descends, the chill in the air prompts a surge of rodent activity in our homes. Rats, ever resourceful, seek warmth, food, and shelter within human dwellings, making this month particularly perilous for homeowners. With temperatures dropping, these clever critters exploit overlooked entry points, leaving many unaware of the looming threat of rodent infestations. Understanding their behaviour and how they infiltrate our spaces is crucial to safeguard our homes against these unwelcome guests.

Understanding Rat Behaviour in January

In the harsh winter months, rats remain active while other wildlife hibernates. The quest for survival drives them indoors, where temperatures are stable and food sources are plentiful. Homeowners often underestimate just how small of a gap rats need to slip through, making it essential to understand their routes of entry.

Common Entry Points for Rats

Taking steps to prevent a rat invasion begins with identifying potential entry points, which are often hidden from plain view. Here are some common ways these pests find their way inside:

  • Cracks and Holes: Rats can squeeze through openings as small as a quarter of an inch. Look for cracks in the foundation or gaps in walls.
  • Utility Openings: Gaps around pipes, cables, and vents are frequently overlooked areas that require sealing.
  • Roof Access: Roof rats are master climbers and can access roofs through trees, drainpipes, or damaged vent covers.
  • Windows and Doors: Poorly sealed doors and windows create easy access points. Weatherstripping can help mitigate this issue.
  • Crawl Spaces: These dark, quiet areas provide ideal nesting spots, making them prime targets for intrusion.

Signs of a Rat Infestation

Recognising an infestation early can significantly diminish the problem. Signs to look out for include:

  • Small dark droppings near food sources.
  • Gnaw marks on wood, plastic, or food packaging, indicating feeding activity.
  • Shredded materials used for nesting, often found in undisturbed areas.
  • Noises such as scratching or squeaking, typically noted at night.
  • Greasy smudges along walls from their bodies as they navigate pathways.

Effective Rat Prevention Strategies

To keep rats at bay, employing a variety of preventive measures is vital:

  • Seal Entry Points: Fill cracks and holes with steel wool or caulk. Ensure vents and utility openings are covered with hardware cloth.
  • Eliminate Food Sources: Secure food in airtight containers and promptly clean up spills or crumbs.
  • Manage Waste: Use tightly fitting lids on trash cans and dispose of rubbish regularly to reduce attraction.
  • Trim Landscaping: Maintain foliage to reduce cover for rats, and keep trees trimmed away from the roof.
  • Fix Leaks: Address any plumbing issues that may provide water sources, further enticing rats to your premises.

How to Handle an Existing Infestation

If a rat problem is already present, immediate action becomes imperative. Consider these tactics:

  • Trapping: Snap traps are effective when properly placed in areas of high activity.
  • Bait Stations: These can help reduce the population while remaining safe around pets and children.
  • Professional Pest Control: For severe cases, contacting a pest control expert can provide effective and humane solutions.

Understanding the winter behaviour of rats and their preferred entry points is crucial for homeowners looking to protect their space. Taking proactive measures to seal gaps, eliminate food sources, and manage waste can mitigate the risk of a rodent infestation. If signs of rats are detected, prompt action is essential to maintain a safe, comfortable home.